Proclamation Code Letters FF - Finfish proclamations that deal with commercial and recreational size and creel limits, seasons, areas, etc. SH - Shrimp proclamations that open or close areas to shrimping and crab trawling, or require bycatch reduction devices SF - Proclamations dealing with oysters and clams: hand and mechanical seasons, limits, areas, etc. M - Miscellaneous proclamations that usually deal with gill nets, seines, and their mesh size, length, or area restrictions RS - Research sanctuaries granted in some cases for one year for research purposes SC - Proclamations dealing with bay or calico scallop harvest PA - Proclamations that open and close areas to shellfishing depending on the amount of coliform bacteria present